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4호선 전동차 추진제어장치(C/I) 고장원인에 관한 연구
이길형(G. H. Lee),김경섭(K. S. Kim),박찬배(C. B. Park) 한국도시철도학회 2015 한국도시철도학회논문집 Vol.3 No.1
Although a city commuter train performs a basic means of transportation role at an one city, a city commuter train performed roles of urban commuter train railway as well as city commuter train to a wide area of urban zone of life. For this reason, a city commuter train manufactured for the purpose of running of short distance running for more than two hours in numerous cases and passenger also spend 1~2 hours in a urban commuter train at one boarding in numerous cases. It is with this in mind that we research paper by Passenger’s Questionnaire Survey ? Case for the purpose of gathering the opinions from passengers about the commuter trains with toilet which is about train at its convenient.